Penultima ReRolled PR3 - Homeland Security

In order to combat the rising menace of international terrorism, Penultima crafted a grand stone wall to seal off Claustrophobia Pass from the nations to the west. Its name... PassGate Fortress.
Of course, the southern border is left wide open, nobody to the west really wants to invade us, security is largely a joke, the whole thing revolves around a magical barrier to augment the stonework and a hundred bloodthirsty orcs are about to descen